Answer:
The atomic number of the sodium atom is 11. The atomic mass number can be estimated by rounding the atomic mass to 23.
Explanation:
The atomic number of the sodium atom is 11. The atomic mass number can be estimated by rounding the atomic mass to 23.
Answer:
When atoms are excited they emit light of certain wavelengths which correspond to different colors. Each element produces a unique set of spectral lines. Since no two elements emit the same spectral lines, elements can be identified by their line spectrum.
Explanation:
The momentum of the projectile is 6.8 * 10⁵ kgm/s
<h3>
Momentum and projectiles</h3>
Momentum of an object is the product of the mass of that object and its velocity.
where m is mass of object
v is velocity of object
A projectile is an object launched into space and allowed to fall freely under the force of gravity.
The momentum of a projectile is conserved in the horizontal direction since no net force acts on the projectile in the horizontal direction.
using the formula for momentum;
p = m*v
Assuming the mass of the projectile to be 800 kg
Velocity of the projectile = 850 m/s
p = 800 kg * 850 m/s
p = 6.8 * 10⁵ kgm/s
Therefore, the momentum of the projectile is 6.8 * 10⁵ kgm/s
Learn more about momentum and projectiles at: https://brainly.in/question/201038
